Publications by authors named "Fifer R"

Purpose Congenital cytomegalovirus (cCMV) is the most common congenital infection worldwide and a leading environmental cause of pediatric hearing loss (HL). The objective of this study was to evaluate audiologists and speech-language pathologists (SLPs) on awareness and knowledge of cCMV. Method A multiple-choice survey assessing awareness, knowledge, and practice patterns was sent electronically to audiologists and SLPs of the American Speech-Language-Hearing Association.

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Aminoglycosides are commonly used to treat infections in CF patients and are highly ototoxic. The incidence of tobramycin-induced hearing loss, tinnitus, vertigo or dizziness (ototoxicity) varies widely from 0 to 56% secondary to variation in patient enrollment, dosing, audiometry, and ototoxic criteria. The aim of this study is to determine the incidence of ototoxicity after one course of once-daily IV tobramycin in CF patients.

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Reimbursement for hearing aids in the present time has become as complicated, if not more so, than any other area of health care. For many years, hearing aids were a noncovered item where insurance was concerned. The predominant model of bundling costs into a single dollar amount was copied decades ago from hearing instrument specialists.

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Universal newborn hearing screening (UNHS) uses otoacoustic emissions testing (OAE) and auditory brainstem response testing (ABR) to screen all newborn infants for hearing loss (HL), but may not identify infants with mild HL at birth or delayed onset HL. The purpose of this review is to examine the role of genetic screening to diagnose children with pre-lingual HL that is not detected at birth by determining the rate of children who pass UNHS but have a positive genetic screening. This includes a summary of the current UNHS and its limitations and a review of genetic mutations and screening technologies used to detect patients with an increased risk of undiagnosed pre-lingual HL.

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In the spring of 2017, a full-term infant with microcephaly was delivered in South Florida. During first trimester, the mother presented with fever, nausea, and vomiting. She reported no foreign travel for herself or her partner.

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Importance: Hearing impairment is common in adults, but few studies have addressed it in the US Hispanic/Latino population.

Objective: To determine the prevalence of hearing impairment among US Hispanic/Latino adults of diverse backgrounds and determine associations with potential risk factors.

Design, Setting, And Participants: The Hispanic Community Health Study/Study of Latinos (HCHS/SOL) is a population-based sample of Hispanics/Latinos in four US communities (Bronx, New York; Chicago, Illinois; Miami, Florida; and San Diego, California).

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The present study estimates the longitudinal effects of in utero cocaine exposure on language functioning at 3, 5 and 7 years of age in an urban sample of 443 full-term children (236 cocaine-exposed and 207 noncocaine-exposed) participating in the Miami Prenatal Cocaine Study. The sample was enrolled prospectively at birth, with documentation of prenatal drug exposure status through maternal interview and urine and meconium toxicology assays. Language functioning was measured at ages 3 and 5 years using the Clinical Evaluation of Language Fundamentals-Preschool (CELF-P) and at age 7 years using the Core Language Domain of the NEPSY: A Developmental Neuropsychological Assessment.

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This case presentation describes a patient with a strategically placed lesion involving the right insula and adjacent white matter. The most remarkable finding associated with this case is the presence of a unilateral auditory processing disorder when presenting speech materials to the left ear. Intervention for this patient is described in addition to a discussion of possible explanations for the unique pattern of auditory dysfunction.

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This investigation studied the electrical auditory brainstem response (EABR) input-output functions in three groups of patients: individuals with normal auditory neural systems; patients with acquired, profound sensorineural hearing loss; and patients with congenital, profound sensorineural hearing loss. Each input-output function was obtained in the operating room under general anesthesia and with the patient paralyzed to eliminate myogenic contamination. In contrast to the acoustically elicited ABR, the EABR waveforms were characterized by a dominant early wave corresponding in latency to wave II.

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We have developed an approximation that provides a fast reasonably accurate estimate of the halfwidth at half-height of a single pressure-broadened line.

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Two cases demonstrating the effects of myogenic artifact on the electrical auditory brainstem response (EABR) when using a promontory stimulation site are presented. Intensity-response functions were obtained in the unparalyzed condition, then repeated after infusion of a neuromuscular paralyzing agent. In both cases, the myogenic response was observed at lower stimulus intensities than the EABR components.

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Labyrinthine ossification can be found in a high percentage of patients with profound deafness resulting from bacterial meningitis. Radiographic evidence of ossification can be found as early as 2 months after the acute infection, indicating that the intracochlear process probably begins much earlier. If long, intracochlear cochlear implants are to be most successfully used in these patients, an aggressive approach to clinical management following the meningitis should be taken.

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The audiometric records of 324 subjects with sensorineural hearing loss, presumed to be cochlear, were analyzed in order to develop norms for "disproportionate loss" in speech intelligibility. From the scatterplot relating PBmax to PTA2 (average of HTLs at 1,000, 2,000, and 4,000 Hz), and the scatterplot relating SSImax to PTA1 (average of HTLs at 500, 1,000, and 2,000 Hz), linear boundaries were constructed encompassing approximately 98% of observed values. A speech intelligibility score (PB or SSI) may be considered "disproportionately poor" if it falls below this empirically derived boundary.

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The auditory middle latency response (AMLR) was first reported 30 years ago. For a variety of reasons, the AMLR was relatively slow to gain clinical acceptance. However, renewed investigational efforts into the nature of the response is leading to a better understanding of the AMLR's characteristics, limitations, and appropriate clinical applications.

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Numerous remarkable advancements have been made in the area of voice prosthetics. A significant, persistent problem, however, has been the development of air leaks around the tracheostome housing. This problem is particularly apparent with patients having deeply recessed, irregular stomas.

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In a patient with a multichannel cochlear implant, it was possible to demonstrate stapedius reflex contraction to intracochlear electrical stimulation. Using a standard immittance measurement technique, characteristics of the electrically evoked reflex were compared to analogous characteristics of the acoustically evoked reflex. Latency-intensity functions were similar for the two modes of excitation, but reflex waveform morphology and amplitude growth functions were different.

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The Minimal Auditory Capabilities (MAC) battery was used to evaluate the auditory performance of nine postlingual and ten prelingual adults with severe to profound hearing loss. Results suggest that degree of hearing loss overrides relative language skills as the primary factor affecting performance. The MAC battery appears promising as a tool for evaluating and monitoring both prelingual and postlingual adults using conventional hearing aids or cochlear implants.

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Third-order synthetic sentences were aligned to make them suitable for dichotic presentation. These dichotic sentence materials were then administered to 14 normal listeners and 48 hearing-impaired subjects to determine the influence of peripheral hearing loss on test performance. Results suggest that the Dichotic Sentence Identification test is resistant to the influence of peripheral hearing loss until the pure-tone average of 500, 1000, and 2000 Hz exceeds approximately 50 dB.

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